A person standing 150 centimeters from a mirror notices that the angle of depression from his eyes to the bottom of the mirror is 14°, while the angle of elevation to the top of the mirror is 12°. Find the vertical dimension of the mirror (see the figure). Round to the nearest degree.
?
?
?
?
A. 79 cm
B. 71 cm
C. 68 cm
D. 69 cm
E. 72 cm
Answer: D
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Find the domain and the range for the function.
A. D: 
, R: 
B. D: All real numbers, R: All real numbers
C. D: 
, R: 
D. D: 
, R: 
Solve.An express train travels 252 miles between two cities. During the first 
of a trip, the train traveled through mountainous terrain. The train traveled 
per hour slower through mountainous terrain than through level terrain. If the total time to travel between the cities was 6 hours, find the speed of the train on level terrain.
A. 62 mph B. 32 mph C. 17 mph D. 47 mph
Use the following graph which shows the monthly sales of a heating supplier. 
What was the percent of increase in sales from March to April?
A. 102.4% B. 10.2% C. 50.6% D. 127%
Indicate whether the statement is true always, sometimes, or never.The product of a pair of complex conjugates (with b ? 0) is the difference of the squares of the real and imaginary parts.
A. Sometimes B. Always C. Never